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Size Effects in the Magnetization of Epitaxial YBa2Cu3Ox Films

  • Shin Kosaka
  • Haruhiko Obara
  • Masaichi Umeda
  • Yoichi Kimura
  • Hisanori Yamane
  • Toshio Hirai
  • Hideyuki Kurosawa
Conference paper

Abstract

Systematic measurements of magnetization dependence on sample size have been performed on epitaxial YBCO films in order to investigate granularity characteristics of oxide superconductor thin films. YBCO films were deposited by using a molecular beam epitaxy(MBE) technique and chemically etched into a disks of diameters between 10μm to 1 mm. Magnetization of these films have exhibited a remarkable linear dependence of the magnetization on the diameter, which shows Bean-critical-state model has been fully established and no granularity has existed in these epitaxial YBCO films. Results have been compared with YBCO films deposited by chemical vapor deposition(CVD) technique.

Keywords

Molecular Beam Epitaxy Remanent Magnetization Critical Current Density YBCO Film Oxide Superconductor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Tokyo 1991

Authors and Affiliations

  • Shin Kosaka
    • 1
  • Haruhiko Obara
    • 1
  • Masaichi Umeda
    • 1
  • Yoichi Kimura
    • 1
  • Hisanori Yamane
    • 2
  • Toshio Hirai
    • 2
  • Hideyuki Kurosawa
    • 3
  1. 1.Electrotechnical LaboratoryTsukuba, Ibaraki, 305Japan
  2. 2.Institute for Materials ResearchTohoku UniversityAoba-ku, Sendai, 980Japan
  3. 3.RIKEN Co.Kumagaya, 360Japan

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